refactor(repo): переход на pnpm monorepo с shadcn/ui и Fastify+Drizzle

Frontend:
- apps/web (Vite+TS, TanStack Router/Query, shadcn/ui @cfdm/ui base-nova)
- 10 страниц в routes/_auth/, Recharts через shadcn Chart, lucide-react
- формы на RHF + Zod (FormSheet/FormField)
- удалены Tabler, Chart.js, react-router-dom

Backend (параллельный трек):
- apps/api (Fastify 5 + Drizzle + better-sqlite3)
- packages/db: Drizzle-схема и repositories по сущностям
- packages/shared: Zod-контракты
- роуты с валидацией и единым форматом ошибок { error: { code, message } }
- sync/backup — заглушки 501 (billmanager-адаптеры переносятся отдельно)
- legacy Express оставлен как runtime по умолчанию (RUNTIME=express)

Infra:
- Dockerfile multi-stage под pnpm workspaces
- .dockerignore и docker-compose обновлены под monorepo

Rules:
- удалены нерелевантные правила (rust, cloudflare, server/frontend-conventions)
- project-structure.mdc и AGENTS.md переписаны под monorepo
- frontend-shadcn.mdc, shadcn-ui-production.mdc, sqlite.mdc обновлены

Co-authored-by: Cursor <[email protected]>

package.json

@@ -4,33 +4,26 @@
   "version": "0.0.0",
   "type": "module",
   "scripts": {
-    "dev": "concurrently \"npm run server\" \"vite\"",
-    "server": "node server/index.js",
-    "build": "vite build",
+    "dev": "pnpm --filter web dev",
+    "dev:api": "pnpm --filter api dev",
+    "build": "pnpm --filter web build",
     "lint": "eslint .",
-    "preview": "vite preview"
-  },
-  "dependencies": {
-    "cors": "^2.8.5",
-    "express": "^4.21.1",
-    "sql.js": "^1.14.0"
+    "preview": "pnpm --filter web preview",
+    "test": "pnpm -r --if-present test"
   },
   "devDependencies": {
     "@eslint/js": "^9.39.1",
-    "@tabler/core": "^1.4.0",
-    "@tabler/icons-react": "^3.40.0",
-    "@types/react": "^19.2.7",
-    "@types/react-dom": "^19.2.3",
-    "@vitejs/plugin-react": "^5.1.1",
-    "chart.js": "^4.5.1",
-    "concurrently": "^9.1.0",
     "eslint": "^9.39.1",
     "eslint-plugin-react-hooks": "^7.0.1",
     "eslint-plugin-react-refresh": "^0.4.24",
     "globals": "^16.5.0",
-    "react": "^19.2.0",
-    "react-dom": "^19.2.0",
-    "react-router-dom": "^7.13.1",
-    "vite": "^7.3.1"
+    "typescript": "^5.9.2"
+  },
+  "packageManager": "[email protected]3.2",
+  "engines": {
+    "node": ">=22"
+  },
+  "pnpm": {
+    "onlyBuiltDependencies": ["better-sqlite3", "esbuild"]
   }
 }